Bluetooth cuts out intermittently while listening to Spotify. Sometimes disconnects fully and goes to a different source. Whole digital stereo system is slow (i.e. takes a few seconds to turn off after pressing power knob, etc). Dealer suggested removing negative terminal from battery for an hour, which I did overnight and if anything, it's worse. I know I need to update the software but of course that takes forever. Anyone have any ideas before I have to leave the truck at the dealer for a day?